155542234443 has 16 divisors (see below), whose sum is σ = 209986583040. Its totient is φ = 102401964864.

The previous prime is 155542234439. The next prime is 155542234447. The reversal of 155542234443 is 344432245551.

It is an interprime number because it is at equal distance from previous prime (155542234439) and next prime (155542234447).

It is not a de Polignac number, because 155542234443 - 2² = 155542234439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155542234395 and 155542234404.

It is not an unprimeable number, because it can be changed into a prime (155542234447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590146 + ... + 812007.

It is an arithmetic number, because the mean of its divisors is an integer number (13124161440).

Almost surely, 2^155542234443 is an apocalyptic number.

155542234443 is a deficient number, since it is larger than the sum of its proper divisors (54444348597).

155542234443 is a wasteful number, since it uses less digits than its factorization.

155542234443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402618.

The product of its digits is 1152000, while the sum is 42.

Adding to 155542234443 its reverse (344432245551), we get a palindrome (499974479994).

The spelling of 155542234443 in words is "one hundred fifty-five billion, five hundred forty-two million, two hundred thirty-four thousand, four hundred forty-three".